毕业设计--基于PLC的五层轿厢式电梯控制系统

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1、I 摘 要 随着科学技术的发展，近年来，我国的电梯生产技术得到了迅速发展一些电厂也在 不断改进设计、 修改工艺,更新换代生产更新型的电梯。 为提高电梯的运行效率和服务质量， 电梯控制器的改进和对电梯的调速方式需要进行深入研究、探讨。传统的继电器电梯控制 系统，由于可靠性低、体积庞大、反应速度慢等问题，已基本被淘汰，取而代之的是可编 程控制器。随着电力电子技术、微电子技术发展，直流调速被交流调速取代已是不争的事 实。交流拖动系统调速方式中，变频调速具有调速容易、节能等优势，能与直流调速的指 标相媲美，被广泛应用在各个领域，成为电机主流调速方式。 本文分析了轿厢 S 形速度运行曲线对电梯舒适性的影

2、响， 重点研究电梯拖动系统的电 梯控制方法。设计了基于 PLC 的五层轿厢式电梯控制系统，将变频调速方法与远程监控应 用到电梯控制系统中，最终完成了设计要求并进行了系统模拟实验。 关键词：PLC 控制，电梯，变频调速 II Abstract With the development of science and technology in recent years, Chinas elevator production technology for fast development. Some elevator manufacturers also continue to improve th

3、e design, modification process. To improve the operation efficiency and service quality, it needs in-depth studies to improve elevator controller and speed governing approaches. Due to low reliability, bulky size and slow response, traditional relays in elevator control systems have basically been e

4、liminated, and replaced by programmable logic controllers. With the development of power electronics technology and microelectronic technology, it is an indisputable fact that AC speed governing has been replaced by DC drive. In AC Drive Speed Control System mode, AC VVVF with advantages of easy spe

5、ed-governing and energy-saving compares favourably with DC VVVF， so it is widely used in various fields and becomes the mainstream of motor speed governing. In this paper, We analyse the influence of lift car running S-shaped curve to the elevator comfort , Focus on the elevator the elevator drive s

6、ystem control method. Design of PLC-based five-layer-style elevator control systems, frequency control method applied to elevator control and remote monitoring system, came up with the design requirements and system simulation experiments. Key words: PLC control, elevators, VVVF I 目录目录 第 1 章绪论- 1 - 1.1 电梯的起源及发展- 1 - 1.2 电梯的发展现状.- 2 - 1.2.1 国外电梯发展情况- 2 - 1.2.2 国内电梯发展情况- 3 - 1.3 本论文主要研究内容：- 4 - 第 2 章 五层电梯控制分析- 5 - 2.1 电梯的分类- 5 - 2.2 电梯的构造及用途说明- 6 - 2.3、电梯模型结构简介.- 8 - 2.3.1 轿厢升降拖动系统- 8 - 2.3